For the protection of the subject, safety features are incorporated into the device to avoid any unexpected excursions in the temperature. The device will automatically terminate the procedure if the measured temperature exceeds the minimum and maximum programmed temperature by more than one degree, i.e., 1ºC colder than the minimum programmed cooling temperature or 1ºC warmer than the maximum programmed temperature. Furthermore, the device has been tested extensively prior to being made available for use in this clinical study. Electrical safety tests to established standards (IEC-60601, UL-2601) have been performed and extensive testing has been performed to demonstrate device temperature reproducibility. Biocompatibility testing has been performed on any materials that are to contact the treatment site.